NHTSA Complaint #11543293 — 2020 TESLA MODEL S

This is a follow up to my previous complaint about corroded ground connections causing loss of power steering on Tesla Model Y. Having done more research it is certain that this problem affects all Tesla models. Here is a thread on the Tesla Motors Forum. [XXX] "Mar 28, 2023 #1 About 2 weeks ago, while reversing in my driveway, during a hard turn left, I lost power steering and received the service alerts "steering assist reduced" and "park assist unavailable." Took the vehicle to Tesla who diagnosed a $4200 steering rack. Declined the repair and paid only the required $200 diagnostic fee. Did some research online, and discovered the power steering motor ground was corroded, and upon my attempt at removal, it detached from the frame. I taped out a new, relocated, hole and resecured the ground with bolt and washers, I now have power steering again. I am a little upset that not only did Tesla mis-diagnose the problem, I paid them $200 for the bad diagnosis" Other owners chime in to say that the same thing happened to them. These owners are doing DIY repairs that will only fix the problem temporarily. This is an easily fixable problem. The ground connection for all safety critical items should be via a solid copper cable direct to the 12 Volt battery negative terminal and NOT via the car bodywork which has a mix of aluminum and steel that creates galvanic corrosion. Smearing grease on these parts is not a solution. Glitches on the 12 Volt system can also cause random intermittent glitches in all aspects of the car's systems including unintended acceleration. I am qualified in both mechanical and electronic engineering and what I am saying is not some Tesla hating conspiracy theory as has been claimed by some Musk followers. Thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)